NPPES file of Aug 9, 2026

Millicent Owusu Tiwaah, DO

Family Medicine Physician · Dallas, PA

Millicent Owusu Tiwaah, DO is a family medicine physician with a practice address in Dallas, Pennsylvania, and NPI 1235457615, issued on May 11, 2010. Check the license (Pennsylvania OS017197, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1235457615
Name
Millicent Owusu Tiwaah
Credential
DO
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
OS017197 PA
Self-reported in NPPES; status is on the state search
Practice location
114 LT Michael Cleary Dr, Dallas, PA 18612
Phone
(570) 675-2000
Enumerated
May 11, 2010
Record last updated
Aug 11, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(570) 675-1806
Medicare enrollment
Enrolled (PECOS I20141002001831); accepts Medicare assignment
Medical or professional school
Philadelphia College Of Osteopathic Medicine, 2010
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 114 LT Michael Cleary Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Raymond Besecker, RPHPharmacist1598113045
  2. Stella Marie Cruz, M.D.Pediatrics Physician1235298027
  3. Aimee Detweiler, CRNPNurse Practitioner1023407244
  4. Kathryn Gussman, M.D.Family Medicine Physician1609220961
  5. Samantha Harpersberger, PA-CPhysician Assistant1831863042
  6. Matthew Joseph, D.O.Family Medicine Physician1912262759

Verify Millicent Owusu Tiwaah in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license OS017197
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2% more Medicare Part D claims than the average family medicine physician in 2024

3,610 Medicare Part D claims for 375 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 16 claims were for opioids.

  1. Millicent Tiwaah3,610
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium219 claims
  2. Levothyroxine Sodium131 claims
  3. Rosuvastatin Calcium116 claims
  4. Amlodipine Besylate103 claims
  5. Omeprazole99 claims
  6. Lisinopril85 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Geisinger ClinicKingston, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Millicent Owusu Tiwaah among 7,483 family medicine physician records in Pennsylvania

Millicent Owusu Tiwaah, DO is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 60% of them.

  • NPI issued2010 · 60% of these records are older, 38% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2010 · median 2005 among the 4,529 with a school on file
  • Record last updated2020 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

11 family medicine physician records list a practice address in Dallas

They are 11 of the 234 NPPES records with a practice address in Dallas, and 7,483 family medicine physician records in Pennsylvania.

The 8 family medicine physician records with the nearest ZIP codes

  1. Kara Brezinski-Clark, D.O.Dallas, PA 186121053551465
  2. Jane Durkin, D.O.Dallas, PA 186121740249663
  3. Kathryn Gussman, M.D.Dallas, PA 186121609220961
  4. Leo Hartz, M.D.Dallas, PA 186121518013838
  5. Matthew Joseph, D.O.Dallas, PA 186121912262759
  6. Michael Kovalick, D.O.Dallas, PA 186121063472389
  7. Elise Mester, MDDallas, PA 186121013412212
  8. Richard Oley, D.O.Dallas, PA 186121891754719

Common questions

What is Millicent Owusu Tiwaah, DO's NPI number?

Millicent Owusu Tiwaah, DO's National Provider Identifier (NPI) is 1235457615, issued on May 11, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Millicent Owusu Tiwaah, DO located?

The NPPES record lists a practice address at 114 LT Michael Cleary Dr, Dallas, PA, 18612. Phone: (570) 675-2000. Providers update this record themselves, so call before visiting.

How can I verify Millicent Owusu Tiwaah, DO's license?

NPPES lists Pennsylvania license number OS017197, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Millicent Owusu Tiwaah, DO prescribe under Medicare Part D?

In 2024, Millicent Owusu Tiwaah, DO had 3,610 Medicare Part D claims for 375 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.